The yield curve shows the relationship between interest rates and time. The yield curve is displayed as a line on a graph, with time on the horizontal axis and interest rates on the vertical axis. The shape of the yield curve is considered a key indicator of current and future economic conditions. For example, in an economy that’s humming along nicely, the yield curve gently slopes up. This is because bond investors expect higher returns in exchange for the uncertainty associated with longer-term bonds. A steep yield curve--with short-term rates much lower than long-term rates--is often associated with an economy picking-up steam after a recession. With an inverted yield curve, the line is downward sloping because short-term interest rates are higher than long-term rates. An inverted yield curve is a meaningful indicator of pending economic stress or a recession. With a flat yield curve, interest rates are roughly the same for short and long--term maturities. A flat yield curve is often associated with uncertainty or confusion about the direction of the economy.